A new poll by Gallup showed a gap closing between top contenders of "most admired" people as determined by U.S. adults.

Former first ladies Hillary Clinton and Michelle Obama are among the top "most admired" women. Of the respondents, 9 percent favored Clinton while 7 percent favored Obama in the survey, which had a sampling error of plus or minus 4 percentage points.

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Former President Barack Obama and President Donald Trump remain the top two figures of "most admired" men. Of the respondents, 17 percent favored Obama while 14 percent favored Trump in the survey, which had a sampling error of plus or minus 4 percentage points.

Each of those pairs had a closer result this year than they did in 2016. Barack Obama and Hillary Clinton were the clear winners, though, in 2015.

A Gallup spokeswoman said in a statement that it has historically based the rank-order list on the number of total responses for each choice, regardless of statistical significance or how close the picks are.